Every good act is charity. A man’s true wealth hereafter is the good that he does in this world to his fellows.

Muhammad (AD c. 570-632) Arab religious, military, and political leader; founder of Islam [Mohammed, مُحَمَّد]

(Attributed)
    (Source)

Attributed in Rev. James Wood (ed.) Dictionary of Quotations from Ancient and Modern, English and Foreign Sources (1893). Also sometimes attributed to Moliere.